I just got a new xbox and transferred all of my content from the old one. All seemed well until I got a message today saying that the DLC that I've been playing with for the past three weeks is "missing." This has happened on multiple games. I deleted it, cleared the cache, transferred all the content licences to my new system, restarted the system, and re-downloaded everything, only to get the same message. Let me reiterate the most baffling point of all: I'd been playing using the DLC that my system now says is missing, despite the fact that it appears in the download history, purchase history, on the hard drive and the fact that it was working just fine this morning. Ideas, anyone?